the thing you have to watch is the tricombs. get a 20-60x magnifying glass. i like 40x. those little disco balls are what you want to watch. clear/cloudy/amber is what makes the difference. at 45 days of flower is a good time to start paying attention to what they are doing. pistals are a sign but its not those that ripen and have a sweet spot. the tricombs are what you need to watch, even if its going hard.